Schild's Ladder: A Novel (Paperback)

by Greg Egan (Author) "In the beginning was a graph, more like diamond than graphite..." (more)
Key Phrases: quantum graphs, signaling layer, ordinary vacuum, Blue Room, Tchicaya's Mediator, Diamond Graph (more...)

Editorial Reviews

Amazon.com Review
Greg Egan became the hottest new science-fiction author of the 1990s and won the Hugo and John W. Campbell Memorial awards by extrapolating cutting-edge quantum physics and consciousness theory to create rigorous and radical new visions of the posthuman future. Schild's Ladder affirms Mr. Egan's place, with Olaf Stapledon and Poul Anderson, among the giants of cosmic-scale SF.

In Schild's Ladder, humanity has transcended both death and Earth, and discovered its home world is nearly unique as a cradle of life. As it spreads throughout the galaxy, humanity enjoys an almost utopian existence--until a scientist accidentally creates an impenetrable, steadily expanding vacuum that devours star systems and threatens the entire universe with destruction.

Tchicaya is a Yielder, member of the faction that believes this "novo-vacuum" deserves study. The opposing Preservationists--among them Mariama, his first love--seek to save worlds and destroy the novo-vacuum. Discord heats to terrorist violence; then enmities and alliances are turned upside-down by a discovery that may mean the novo-vacuum is, instead, a new and very different universe--and one which may contain life. --Cynthia Ward --This text refers to the Hardcover edition.

From Publishers Weekly
Australian Egan (Teranesia) writes some of the hardest SF around in terms both of difficulty and cutting-edge scientific content, as shown in his latest challenging novel, set some 20,000 years in the future. Though superhuman by our standards, Egan's characters often disembodied intelligences who prefer to live as programs in virtual reality or in still stranger, high-tech media are still capable of making mistakes. At the start, an experiment in quantum physics goes badly astray, creating another universe with physical laws that differ from our own. Its border expanding at half the speed of light, this new universe swallows planetary systems whole. Fortunately, humanity is so highly developed that entire populations can be quickly evacuated with little if any loss of life. Soon the scientific community divides into two groups, those who would destroy the new universe, and those who would study it. The debate becomes even more tense when evidence of life is found behind the rapidly expanding border. Characters invariably speak the language of quantum physics fluently, and the author makes little effort to bring their discussion down to the layman's level. Not until the end, when scientists begin to explore the new universe, does Egan make any real attempt to engage the reader's senses or emotions. The pleasures of this impressive novel, although considerable, are almost entirely intellectual.
Copyright 2002 Cahners Business Information, Inc. --This text refers to the Hardcover edition.

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Product Details

• Paperback: 352 pages
• Publisher: Eos (December 23, 2003)
• Language: English
• ISBN-10: 006107344X
• ISBN-13: 978-0061073441
• Product Dimensions: 8 x 5.3 x 0.8 inches
• Shipping Weight: 9.4 ounces
• Average Customer Review: 3.6 out of 5 stars See all reviews (31 customer reviews)
• Amazon.com Sales Rank: #247,541 in Books (See Bestsellers in Books)

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Customer Reviews

Most Helpful Customer Reviews

28 of 30 people found the following review helpful:

3.0 out of 5 stars So hard it will hurt when you knock your head against it, September 7, 2004

By	M. S. Hillis (San Francisco, CA) - See all my reviews (REAL NAME)

Woosh. That was the sound of this book going right over my head.
I love hard sci-fi, don't get me wrong. I've read plenty of layman's books on quantum physics and consider myself reasonably well-informed on science in general. Still, large chunks of "Schild's Ladder" were basically gibberish to me, and the book was actually somewhat of a chore to get through. I haven't had that experience in a long time.

The basic plot of "Schild's Ladder" is certainly engaging: 20,000 years in the future, an experiment gone awry creates a new universe that is expanding inside our own at half the speed of light, gobbling up worlds and forcing evacuations of whole planets. The key outpost to study the phenomenon is occupied by two opposing factions: the Yielders, who want to study and even protect the new universe, and the Preservationists, who want to stop or destroy it. The main character arrives at the station as part of the former clique, only to discover his childhood love has thrown in her lot with the other side.

Sadly, neither person really gets fleshed out, and I was puzzled by the main character's emotional obsession with his former love. She never seemed like anything special to me. Interactions with other characters come off as flat. We are told at one point that violent crime has basically been unheard of for 19,000 years, yet a brutal act of sabotage is taken in stride by people for whom a more natural reaction would surely be sheer bafflement or shock-inducing horror. The characters like to make trite quips one instant and in the next display thin-skinned petulance.

The story drags through the middle of the book as the factions solidify their positions, the main character engages in some flashback reminiscing, and the technicalities of quantum weirdness are explored in mind-boggling detail. The last quarter of the book is actually pretty gripping as the researchers make progress in understanding the new universe. Egan does a commendable job of describing what is on the other side of the boundary, and I found his technical descriptions easier to follow as they focused more on technology and engineering rather than quantum theory. He also deserves kudos for employing the etaphor from which the book gets it title. Schild's Ladder is apparently an actual mathematical proof and it's an impressive feat to take that and turn it into a metaphor for human change.

I picked up this book because I like hard sci-fi and had heard good things about Egan. I can say pretty confidently that Egan writes harder than anyone I've read. I felt like I needed to have a graduate degree in physics to fully appreciate the book. This definitely isn't a light read for a general audience.

11 of 12 people found the following review helpful:

5.0 out of 5 stars brilliant science fiction, May 15, 2002

By	Harriet Klausner - See all my reviews (#1 REVIEWER)    (REAL NAME)

This review is from: Schild's Ladder (Hardcover)

Twenty thousand years into the future, humanity has conquered everything in its path including death yet so far at least no other sentient life form has been found that did not originate from earth. Science rules, as knowledge is everything. However, a quantum physics experiment inadvertently creates a vacuum effect that forms a new universe with physical laws different from the current one. This universe is growing rapidly and eats anything in its path though nanotechnology has kept humanity safe by instant evacuation.

However, what is to be done about the ever-expanding new universe that threatens life as we know it becomes the subject of great debate. The Preservationists want to destroy the new universe before it consumes humanity. The Yielders prefer to allow the growth of the new universe in order to study the phenomena. In that void, star crossed lovers Tchicaya and Mariama join separate and opposing hostile camps.

SCHILD'S LADDER is brilliant science fiction as it entertains the reader with an action-packed plot yet requires the audience to think about the ethical clashes that make up the science community as part of the larger society. The story line is cleverly designed to run faster than the speed of light yet maintains a cerebral moral fiber to the plot. Characters are fully developed so that the audience understands for instance the split between Tchicaya and Mariama. Fans of science fiction will want to read Greg Egan's distant future intelligent thriller that leaves the audience hungering for more novels like this one while debating current scientific moral dilemmas confronting society today.

Harriet Klausner

6 of 6 people found the following review helpful:

4.0 out of 5 stars Interesting, but only for specialists, June 14, 2005

By	David Baker (Princeton, NJ) - See all my reviews (REAL NAME)

Not great literature in the classic sense, but there's a lot of intriguing speculation here. The would-be reader should be warned, though: you will not fully appreciate this book unless you've made significant progress toward a degree in physics or a related field! (You could also get away with just reading a lot of pop science, provided you've read enough to be familiar with ideas like decoherence and superselection.) This truly is the hardest SF I've read.

Unlike a lot of hard SF, the characterization is actually more than perfunctory (at least in the main character's case), and the basic idea is very deep. The issues treated in this novel show a lot of philosophical as well as scientific depth. The story is not very gripping, since the future humans don't really face any life-or-death struggles, but I found myself interested enough to finish the book quickly. Recommended only for those with sufficient background.